Systems and methods of using a braided implant

• US 10,456,280 B1
• Filed: 08/06/2018
• Issued: 10/29/2019
• Est. Priority Date: 08/06/2018
• Status: Active Grant

• Current Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Original Assignee: Depuy Synthes Products Incorporated (Johnson & Johnson)
• Inventors: Slazas, Robert, Peters, Geoff
• Primary Examiner(s): Prebilic, Paul B
• Application Number:
  US16/056,135
• Time in Patent Office: 449 Days
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/844 folded prior to deployment
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/92 Stents in the form of a rolled-up sheet expanding after insertion into the vessel , e.g. with a spiral shape in cross-section
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9522 Means for mounting a stent or stent-graft onto or into a placement instrument
• CPC Class Codes: A61F 2002/068 Modifying the blood flow model, e.g. by diffuser or deflector
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: A61L 31/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: D04C 1/06 Braid or lace serving particular purposes
• CPC Class Codes: D10B 2401/10 porous
• CPC Class Codes: D10B 2509/06 Vascular grafts; stents

Abstract

A braided implant configured as a flow diverter for treating an aneurysm. The implant can include a braided mesh configured to maintain a substantially consistent target porosity over up to a 1 mm vessel diameter range over a predetermined length in a tapered vessel.

Claims

1. A system for treating an aneurysm, comprising:

a plurality of braided implants, wherein each braided implant comprises a porosity of 65%-70% that is consistent over a different 1 mm diameter range in a diameter of a vessel, each braided implant configured to provide the consistent porosity over different 1 mm diameter ranges.

2. The system of claim 1, wherein the braided implants are configured for use in a tapered vessel, wherein the tapered vessel comprises a proximal end diameter and a distal end diameter that differ by up to 1 mm, wherein the different 1 mm diameter range in the vessel diameter is defined by comparing the proximal and distal end diameters.

3. The system of claim 1, wherein the plurality of braided implants comprises:

a first braided implant configured to treat a vessel diameter range of 2 to 3 mm.

4. The system of claim 3, wherein each braided implant comprises a pore density ranging between 18 to 23 pores/mm².

5. The system of claim 1, wherein each of the plurality of braided implants are offset from one another by 0.5 mm diameter range in vessel diameter of the next smallest braided implant of the plurality of braided implants.

6. The system of claim 3, further comprising:

a second braided implant configured to treat a vessel diameter range of 2.5 to 3.5 mm.

7. The system of claim 6, wherein a pore density of the second braided implant is 23 pores/mm².

8. The system of claim 6, further comprising:

a third braided implant configured to treat a vessel diameter range of 3.0 to 4.0 mm.

9. The system of claim 8, wherein a pore density of the third braided implant is 18 pores/mm².

10. The system of claim 8, further comprising:

a fourth braided implant configured to treat a vessel diameter range of 3.5 to 4.5 mm.

11. The system of claim 10, wherein a pore density of the fourth braided implant is 19 pores/mm².

12. The system of claim 10, further comprising:

a fifth braided implant configured to treat a vessel diameter range of 4.0 to 5.0 mm.

13. The system of claim 12, wherein a pore density of the fifth braided implant is 23 pores/mm².

14. The system of claim 12, further comprising:

a sixth braided implant configured to treat a vessel diameter range of 4.5 to 5.5 mm.

15. The system of claim 14, wherein a pore density of the sixth braided implant is 21 pores/mm².

16. The system of claim 3, wherein each braided implant further comprises an indicated vessel diameter, and wherein the braided implant is configured such that the indicated vessel diameter coincides with a peak of a porosity curve of the braided implant.

17. The system of claim 16, wherein each braided implant further comprises a porosity plateau that corresponds to the 1 mm range in vessel diameter that is disposed about the peak of the porosity curve.

18. The system of claim 3, wherein a pore density of the first braided implant is 18 pores/mm².

19. The system of claim 1, wherein each braided implant is formed from a plurality of single strands composed of at least a first material and one or more radiopaque multi-strands.

20. A system for treating a hemorrhagic event, comprising:

a plurality of braided implants wherein each braided implant comprises a porosity of 65%-70% that is consistent over a different 0.5 mm diameter range in a vessel diameter, each braided implant configured to provide consistent porosity over different 1 mm radial diameter ranges.